void DOSDEV_InstallDOSDevices(void)
{
DOS_DATASEG *dataseg;
WORD seg;
WORD selector;
unsigned int n;
/* allocate DOS data segment or something */
dataseg = DOSVM_AllocDataUMB( sizeof(DOS_DATASEG), &seg, &selector );
DOS_LOLSeg = MAKESEGPTR( seg, 0 );
DOSMEM_LOL()->wine_rm_lol =
MAKESEGPTR( seg, FIELD_OFFSET(DOS_LISTOFLISTS, ptr_first_DPB) );
DOSMEM_LOL()->wine_pm_lol =
MAKESEGPTR( selector, FIELD_OFFSET(DOS_LISTOFLISTS, ptr_first_DPB) );
/* initialize the magnificent List Of Lists */
InitListOfLists(&dataseg->lol);
/* Set up first device (NUL) */
dataseg->last_dev = NULL;
DOSDEV_SetupDevice( &devs[0],
seg,
DOS_DATASEG_OFF(lol.NUL_dev),
DOS_DATASEG_OFF(thunk[0]) );
/* Set up the remaining devices */
for (n = 1; n < NR_DEVS; n++)
DOSDEV_SetupDevice( &devs[n],
seg,
DOS_DATASEG_OFF(dev[n-1]),
DOS_DATASEG_OFF(thunk[n]) );
/* CON is device 1 */
dataseg->lol.ptr_CON_dev_hdr = MAKESEGPTR(seg, DOS_DATASEG_OFF(dev[0]));
}
static void DOSDEV_DoReq(void*req, DWORD dev)
{
REQUEST_HEADER *hdr = (REQUEST_HEADER *)req;
DOS_DEVICE_HEADER *dhdr;
CONTEXT86 ctx;
char *phdr;
dhdr = PTR_REAL_TO_LIN(SELECTOROF(dev),OFFSETOF(dev));
phdr = ((char*)DOSMEM_LOL()) + DOS_DATASEG_OFF(req);
/* copy request to request scratch area */
memcpy(phdr, req, hdr->size);
/* prepare to call device driver */
memset(&ctx, 0, sizeof(ctx));
ctx.EFlags |= V86_FLAG;
/* ES:BX points to request for strategy routine */
ctx.SegEs = HIWORD(DOS_LOLSeg);
ctx.Ebx = DOS_DATASEG_OFF(req);
/* call strategy routine */
ctx.SegCs = SELECTOROF(dev);
ctx.Eip = dhdr->strategy;
DPMI_CallRMProc(&ctx, 0, 0, 0);
/* call interrupt routine */
ctx.SegCs = SELECTOROF(dev);
ctx.Eip = dhdr->interrupt;
DPMI_CallRMProc(&ctx, 0, 0, 0);
/* completed, copy request back */
memcpy(req, phdr, hdr->size);
if (hdr->status & STAT_ERROR) {
switch (hdr->status & STAT_MASK) {
case 0x0F: /* invalid disk change */
/* this error seems to fit the bill */
SetLastError(ERROR_NOT_SAME_DEVICE);
break;
default:
SetLastError((hdr->status & STAT_MASK) + 0x13);
break;
}
}
}
void DOSDEV_SetupDevice(const WINEDEV * devinfo,
WORD seg, WORD off_dev, WORD off_thunk)
{
DOS_DEVICE_HEADER *dev = PTR_REAL_TO_LIN(seg, off_dev);
WINEDEV_THUNK *thunk = PTR_REAL_TO_LIN(seg, off_thunk);
DOS_DATASEG *dataseg = (DOS_DATASEG*)DOSMEM_LOL();
dev->attr = devinfo->attr;
dev->strategy = off_thunk + FIELD_OFFSET(WINEDEV_THUNK, ljmp1);
dev->interrupt = off_thunk + FIELD_OFFSET(WINEDEV_THUNK, ljmp2);
memcpy(dev->name, devinfo->name, 8);
thunk->ljmp1 = LJMP;
thunk->strategy = DPMI_AllocInternalRMCB(devinfo->strategy);
thunk->ljmp2 = LJMP;
thunk->interrupt = DPMI_AllocInternalRMCB(devinfo->interrupt);
dev->next_dev = NONEXT;
if (dataseg->last_dev)
dataseg->last_dev->next_dev = MAKESEGPTR(seg, off_dev);
dataseg->last_dev = dev;
}
SEGPTR DOSDEV_GetLOL(BOOL v86)
{
if (v86) return DOSMEM_LOL()->wine_rm_lol;
else return DOSMEM_LOL()->wine_pm_lol;
}
void DOSDEV_SetSharingRetry(WORD delay, WORD count)
{
DOSMEM_LOL()->sharing_retry_delay = delay;
if (count) DOSMEM_LOL()->sharing_retry_count = count;
}
static void WINAPI con_interrupt(CONTEXT*ctx)
{
int *scan;
REQUEST_HEADER *hdr = get_hdr(SYSTEM_STRATEGY_CON,(void **)&scan);
BIOSDATA *bios = DOSVM_BiosData();
WORD CurOfs = bios->NextKbdCharPtr;
DOS_LISTOFLISTS *lol = DOSMEM_LOL();
DOS_DATASEG *dataseg = (DOS_DATASEG *)lol;
BYTE *linebuffer = dataseg->buffer;
BYTE *curbuffer = (lol->offs_unread_CON) ?
(((BYTE*)dataseg) + lol->offs_unread_CON) : NULL;
DOS_DEVICE_HEADER *con = dataseg->dev;
DWORD w;
switch (hdr->command) {
case CMD_INPUT:
{
REQ_IO *io = (REQ_IO *)hdr;
WORD count = io->count, len = 0;
BYTE *buffer = CTX_SEG_OFF_TO_LIN(ctx,
SELECTOROF(io->buffer),
(DWORD)OFFSETOF(io->buffer));
hdr->status = STAT_BUSY;
/* first, check whether we already have data in line buffer */
if (curbuffer) {
/* yep, copy as much as we can */
BYTE data = 0;
while ((len<count) && (data != '\r')) {
data = *curbuffer++;
buffer[len++] = data;
}
if (data == '\r') {
/* line buffer emptied */
lol->offs_unread_CON = 0;
curbuffer = NULL;
/* if we're not in raw mode, call it a day */
if (!(con->attr & ATTR_RAW)) {
hdr->status = STAT_DONE;
io->count = len;
break;
}
} else {
/* still some data left */
lol->offs_unread_CON = curbuffer - (BYTE*)lol;
/* but buffer was filled, we're done */
hdr->status = STAT_DONE;
io->count = len;
break;
}
}
/* if we're in raw mode, we just need to fill the buffer */
if (con->attr & ATTR_RAW) {
while (len<count) {
WORD data;
/* do we have a waiting scancode? */
if (*scan) {
/* yes, store scancode in buffer */
buffer[len++] = *scan;
*scan = 0;
if (len==count) break;
}
/* check for new keyboard input */
while (CurOfs == bios->FirstKbdCharPtr) {
/* no input available yet, so wait... */
DOSVM_Wait( ctx );
}
/* read from keyboard queue (call int16?) */
data = ((WORD*)bios)[CurOfs];
CurOfs += 2;
if (CurOfs >= bios->KbdBufferEnd) CurOfs = bios->KbdBufferStart;
bios->NextKbdCharPtr = CurOfs;
/* if it's an extended key, save scancode */
if (LOBYTE(data) == 0) *scan = HIBYTE(data);
/* store ASCII char in buffer */
buffer[len++] = LOBYTE(data);
}
} else {
/* we're not in raw mode, so we need to do line input... */
while (TRUE) {
WORD data;
/* check for new keyboard input */
while (CurOfs == bios->FirstKbdCharPtr) {
/* no input available yet, so wait... */
DOSVM_Wait( ctx );
}
/* read from keyboard queue (call int16?) */
data = ((WORD*)bios)[CurOfs];
CurOfs += 2;
if (CurOfs >= bios->KbdBufferEnd) CurOfs = bios->KbdBufferStart;
bios->NextKbdCharPtr = CurOfs;
if (LOBYTE(data) == '\r') {
/* it's the return key, we're done */
linebuffer[len++] = LOBYTE(data);
break;
}
else if (LOBYTE(data) >= ' ') {
/* a character */
if ((len+1)<CON_BUFFER) {
linebuffer[len] = LOBYTE(data);
WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), &linebuffer[len++], 1, &w, NULL);
}
/* else beep, but I don't like noise */
}
else switch (LOBYTE(data)) {
case '\b':
if (len>0) {
len--;
WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), "\b \b", 3, &w, NULL);
}
break;
}
}
if (len > count) {
/* save rest of line for later */
lol->offs_unread_CON = linebuffer - (BYTE*)lol + count;
len = count;
}
memcpy(buffer, linebuffer, len);
}
hdr->status = STAT_DONE;
io->count = len;
}
break;
case CMD_SAFEINPUT:
if (curbuffer) {
/* some line input waiting */
hdr->status = STAT_DONE;
((REQ_SAFEINPUT*)hdr)->data = *curbuffer;
}
else if (con->attr & ATTR_RAW) {
if (CurOfs == bios->FirstKbdCharPtr) {
/* no input */
hdr->status = STAT_DONE|STAT_BUSY;
} else {
/* some keyboard input waiting */
hdr->status = STAT_DONE;
((REQ_SAFEINPUT*)hdr)->data = ((BYTE*)bios)[CurOfs];
}
} else {
/* no line input */
hdr->status = STAT_DONE|STAT_BUSY;
}
break;
case CMD_INSTATUS:
if (curbuffer) {
/* we have data */
hdr->status = STAT_DONE;
}
else if (con->attr & ATTR_RAW) {
if (CurOfs == bios->FirstKbdCharPtr) {
/* no input */
hdr->status = STAT_DONE|STAT_BUSY;
} else {
/* some keyboard input waiting */
hdr->status = STAT_DONE;
}
} else {
/* no line input */
hdr->status = STAT_DONE|STAT_BUSY;
}
break;
case CMD_INFLUSH:
/* flush line and keyboard queue */
lol->offs_unread_CON = 0;
bios->NextKbdCharPtr = bios->FirstKbdCharPtr;
break;
case CMD_OUTPUT:
case CMD_SAFEOUTPUT:
{
REQ_IO *io = (REQ_IO *)hdr;
BYTE *buffer = CTX_SEG_OFF_TO_LIN(ctx,
SELECTOROF(io->buffer),
(DWORD)OFFSETOF(io->buffer));
DWORD result = 0;
WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buffer, io->count, &result, NULL);
io->count = result;
hdr->status = STAT_DONE;
}
break;
default:
hdr->status = STAT_DONE;
}
do_lret(ctx);
}
DWORD DOSDEV_Console(void)
{
return DOSMEM_LOL()->ptr_CON_dev_hdr;
}
